- #1

- 61

- 3

Fr='gamma'*distance from centroid*Area

but the example is showing density in N/m^3

while I only have the density in kg/m^3

Does this mean I have to multiply it by 9.81 to get the right answer?

Thanks.

- Thread starter Parsifal1
- Start date

- #1

- 61

- 3

Fr='gamma'*distance from centroid*Area

but the example is showing density in N/m^3

while I only have the density in kg/m^3

Does this mean I have to multiply it by 9.81 to get the right answer?

Thanks.

- #2

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

- 12,796

- 1,668

γ is known as the 'weight density' of a substance. γ = ρ ⋅ g, where ρ is the mass density and g is the acceleration due to gravity.

Fr='gamma'*distance from centroid*Area

but the example is showing density in N/m^3

while I only have the density in kg/m^3

Does this mean I have to multiply it by 9.81 to get the right answer?

Thanks.

- #3

- 61

- 3

So, pgh is expressed in N/m^3 as opposed to Kg/m^3?γ is known as the 'weight density' of a substance. γ = ρ ⋅ g, where ρ is the mass density and g is the acceleration due to gravity.

- #4

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

- 12,796

- 1,668

No. Re-read Post #2 again carefully and then work out the units of ρgh versus just ρg.So, pgh is expressed in N/m^3 as opposed to Kg/m^3?

- Last Post

- Replies
- 8

- Views
- 1K

- Replies
- 1

- Views
- 1K

- Last Post

- Replies
- 8

- Views
- 4K

- Replies
- 9

- Views
- 10K

- Last Post

- Replies
- 3

- Views
- 4K

- Last Post

- Replies
- 1

- Views
- 1K

- Last Post

- Replies
- 1

- Views
- 507

- Replies
- 0

- Views
- 2K

- Replies
- 6

- Views
- 851

- Replies
- 2

- Views
- 25K